Fallon opened up the show by discussing Trump’s recently released health records, which were reviewed by Dr. Mehmet Oz, during Trump’s taped appearance Wednesday on The Dr. Oz Show.

“It’s been a busy week for Trump. Earlier today, he appeared on Dr. Oz, and said that he wants to lose about 15 pounds. Then his barber said, ‘Hey, come by any time you like!'” Fallon joked.

When asked if he always saw himself getting into politics Trump said, “I really never did, I probably wouldn’t have done many of the shows that I’ve done over the years if I had,” referencing his reality series The Apprentice and Celebrity Apprentice.

The Republican nominee then says how he “gave up a lot” by going into politics, stating how he left his NBC show for the election after seeing how “things were only getting worse” in the country.

Fallon then proceeded to imitate Trump, which he’s been doing throughout this year’s presidential election.

“I hate to break it to you but I’ve done an impression of you once or twice,” even trying out the Trump voice for the candidate.

“You say some shocking things,” Fallon added.

“But I’m trying not to anymore,” Trump responded.

Fallon ended the guest appearance by asking one simple request of the entrepreneur: “Could I mess up your hair?”

Trump relented at first, wincing as Fallon began to ruffle up his infamous coif.

“The answer is yes, but the people in New Hampshire, where I’m going to be in about an hour from now, I hope they’re going to understand,” Trump said. “Go ahead.”

However, Fallon has been criticized for his handling of the interview. People took to Twitter to accuse the host of “showering a racist with love” and “humanizing a monster,” according to a report from The Telegraph.

We’ll see what happens between Fallon and Democratic nominee Hillary Clinton, who’ll be stopping by the show next week.